[PATCH] accel/ivpu: Reorder Doorbell Unregister and Command Queue Destruction

[Jeff Hugo]

On 5/15/2025 3:41 AM, Jacek Lawrynowicz wrote:
> From: Karol Wachowski <karol.wachowski at intel.com>
> 
> Refactor ivpu_cmdq_unregister() to ensure the doorbell is unregistered
> before destroying the command queue. The NPU firmware requires doorbells
> to be unregistered prior to command queue destruction.
> 
> If doorbell remains registered when command queue destroy command is sent
> firmware will automatically unregister the doorbell, making subsequent
> unregister attempts no-operations (NOPs).
> 
> Ensure compliance with firmware expectations by moving the doorbell
> unregister call ahead of the command queue destruction logic,
> thus preventing unnecessary NOP operation.
> 
> Fixes: 465a3914b254 ("accel/ivpu: Add API for command queue create/destroy/submit")
> Signed-off-by: Karol Wachowski <karol.wachowski at intel.com>
> Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz at linux.intel.com>

Reviewed-by: Jeff Hugo <jeff.hugo at oss.qualcomm.com>